Sentence examples for ppm on a from inspiring English sources

Dotted residue was obtained from a standard solution (10 μL) containing Ti, Cr, Ni, Pb, and Ga, each at a final concentration of 10 ppm, on a normal glass substrate with a silicone coating layer.

The structure of an ethylene counterflow diffusion flame doped with 2000 ppm on a molar basis of either jet fuel or two jet fuel surrogates is studied under incipient sooting conditions.

The system satisfies the main prerequisites for viable application such as 80% thermal efficiency on the basis of lower heating value at full load as well as CO concentration at PrOx exit less than 10 ppm on a dry basis by integrating internal heat exchange network between heat sources, e.g. burner flame, flue gas and reformed gas from reformer exit, and sinks, e.g. water, feed gas and air.

The highest mass accuracy reported earlier for imaging of tryptic peptides was 30 ppm on a time-of-flight system (Djidja et al. 2010), while most studies reported values in the range of 100 ppm.

The rate of defects is usually given on a vertical plot in parts per million (PPM) on an exponential scale.

Selective saturation of the protein resonances was achieved by a train of Gaussian-shaped 50 ms pulses for 2 s at 1.5 ppm (on-resonance) and 30 ppm (off-resonance).

The higher resolution obtained for this sample allows observing that only two signals broaden upon heating, to a similar extent: the signal of residual water and OH groups at 4.7 ppm on one hand, and the NH3+ signal at 8.3 ppm on the other hand.

Fossil fuel burning and a strong El Niño weather pattern pushed CO2 levels 3.05 parts per million (ppm) on a year earlier to 402.6 ppm, as measured at the Mauna Loa Observatory in Hawaii, the National Oceanic and Atmospheric Administration (Noaa) said on Wednesday.

The UAV could reach only a dilute plume with a maximum SO2 concentration of 0.7 ppm on March 15, and a quantitative ratio estimate was possible only for SO2/H2S, which was 8 ± 1.5.

SCOEL has recommended an Occupational Exposure Limit for formaldehyde of 0.2 ppm, based on a carcinogenic threshold mechanism and the avoidance of any sensory irritation in exposed humans.

The U.S. Consumer Product Safety Commission (CPSC 1977) recommended that the Pb content of paint should not exceed 600 ppm based on a finding of "unreasonable risk of lead poisoning in children associated with lead content of over 0.06percentt in paints and coatings to which children have access".